/Engine/Source/Runtime/Engine/Public/InGamePerformanceTracker.h
static class [IConsoleVariable](API\Runtime\Core\HAL\IConsoleVariable) * Enabled = IConsoleManager::Get().RegisterConsoleVariable(TEXT("InGamePerformanceTracking.Enabled"), 0, TEXT("If in-game performance tracking is enabled. Most games will likely not use or need this so it should be left disabled."), ECVF_Default);